<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

    <style>
        .innerDiv{
            width: 100px;
            height: 100px;
        }
        .d1{
            background-color: aquamarine;
            position: fixed;
            left: 30px;
            top: 10px;
        }
        .d2{
            background-color: blue;
        }
        .d3{
            background-color: burlywood;
        }
    
    </style>
</head>
<body>
    <div class = "innerDiv d1">框1</div>
    <div class = "innerDiv d2">框2</div>
    <div class = "innerDiv d3">框3</div>
    <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>
</body>
</html>